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Map could point way to fungus vaccine

Date:
May 31, 2012
Source:
University of Alberta
Summary:
Researchers have made breakthrough use of 3-D magnetic resonance technology to map the structure of Candida, a common fungus that is potentially deadly for individuals with impaired immune function. The work could pave the way for development of an effective vaccine.

University of Alberta researchers have made breakthrough use of 3-D magnetic resonance technology to map the structure of a common fungus that is potentially deadly for people with impaired immune function. The work could pave the way for development of an effective vaccine.

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The researchers targeted Candida albicans, a pathogen that in its most virulent form has led to more than 70,000 bloodstream infections in North American hospital patients. Health officials estimate that the death rate from this bloodstream infection is 40 per cent.

Lead U of A researchers Margaret Johnson and David Bundle, as well as collaborators at the Alberta Glycomics Centre, used nuclear magnetic resonance for a three-dimensional examination of the fungus at an atomic scale that measures less than 100-millionth of a centimetre.

"The process is called molecular recognition," said Johnson. "We examined carbohydrate and antibody molecules related to the fungus in order to determine what sort of vaccine can best combat candida."

Johnson described the three-dimensional approach to vaccinology as giving researchers a clear picture of how a vaccine must physically fit against the surface of the fungus.

The researchers used their findings to design test vaccines that produced positive results in containing the fungus. "Our multi-pronged strategy allowed us to observe a new type of molecular recognition," she said.

Johnson added that if the private sector chooses to complete development of a vaccine, it could be 10 years before the drug is available.

Johnson and Bundle were assisted by U of A researcher Jonathan Cartmell and colleagues at the National University of Ireland and University of Georgia. The research was published May 25 in the Journal of Biological Chemistry.


Story Source:

The above story is based on materials provided by University of Alberta. The original article was written by Brian Murphy. Note: Materials may be edited for content and length.


Journal Reference:

  1. M. A. Johnson, J. Cartmell, N. E. Weisser, R. J. Woods, D. R. Bundle. Molecular Recognition of Candida albicans (1->2)--Mannan Oligosaccharides by a Protective Monoclonal Antibody Reveals the Immunodominance of Internal Saccharide Residues. Journal of Biological Chemistry, 2012; 287 (22): 18078 DOI: 10.1074/jbc.M112.355578

Cite This Page:

University of Alberta. "Map could point way to fungus vaccine." ScienceDaily. ScienceDaily, 31 May 2012. <www.sciencedaily.com/releases/2012/05/120531135748.htm>.
University of Alberta. (2012, May 31). Map could point way to fungus vaccine. ScienceDaily. Retrieved November 26, 2014 from www.sciencedaily.com/releases/2012/05/120531135748.htm
University of Alberta. "Map could point way to fungus vaccine." ScienceDaily. www.sciencedaily.com/releases/2012/05/120531135748.htm (accessed November 26, 2014).

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